Invisible church
From Landmark
One view was promoted to popularity by C I Scofield in his Scofield reference Bible.
This view states that "The Spirit forms the church by baptizing all believers into the body of Christ."
He further states the church to be "composed of the whole number of regenerate persons
from Pentecost to the first resurrection,
united together and to Christ by the baptism with the Holy Spirit."
This is the popular view held by most Protestant churches.
Another view, not as widely held, is that of the "church consisting of all the redeemed in all ages."
From these two views we understand the church to be universal and invisible.
Baptists, in opposition, hold the church to be both local and visible.